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Cheap flights from Chicago O'Hare Intl Airport to Iaşi from $465

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Iaşi departing on 4/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Chicago O'Hare Intl Airport to Iaşi

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
9:50 pm - 3:20 pmORD-IAS
33h 30m2 stops
Lufthansa Logo
4:05 pm - 1:10 pmIAS-ORD
29h 05m2 stops
$587Lufthansa
Find Deal
Wed, Dec 31 - Sun, Jan 18
Lufthansa Logo
10:35 pm - 3:20 pmORD-IAS
32h 45m2 stops
Lufthansa Logo
4:05 pm - 8:05 pmIAS-ORD
36h 00m2 stops
$593Lufthansa
Find Deal
Wed, Dec 3 - Sun, Dec 7
Lufthansa Logo
4:20 pm - 3:20 pmORD-IAS
15h 00m2 stops
Lufthansa Logo
4:05 pm - 1:10 pmIAS-ORD
29h 05m2 stops
$599Lufthansa
Find Deal
Tue, Dec 30 - Wed, Jan 21
Lufthansa Logo
4:20 pm - 3:20 pmORD-IAS
15h 00m2 stops
Lufthansa Logo
4:05 pm - 6:25 pmIAS-ORD
34h 20m2 stops
$602Lufthansa
Find Deal
Thu, Jan 1 - Sun, Jan 18
Austrian Airlines Logo
4:20 pm - 3:20 pmORD-IAS
15h 00m1 stop
Austrian Airlines Logo
4:05 pm - 2:00 pmIAS-ORD
29h 55m1 stop
$651Austrian Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
Austrian Airlines Logo
4:20 pm - 3:20 pmORD-IAS
15h 00m1 stop
Austrian Airlines Logo
4:05 pm - 2:00 pmIAS-ORD
29h 55m1 stop
$652Austrian Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
Austrian Airlines Logo
1:05 pm - 3:20 pmORD-IAS
18h 15m2 stops
Austrian Airlines Logo
4:05 pm - 2:00 pmIAS-ORD
29h 55m1 stop
$656Austrian Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
Austrian Airlines Logo
4:20 pm - 3:20 pmORD-IAS
15h 00m1 stop
Austrian Airlines Logo
4:05 pm - 6:30 pmIAS-ORD
34h 25m2 stops
$662Austrian Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
Multiple Airlines Logo
1:24 pm - 3:20 pmORD-IAS
17h 56m2 stops
Multiple Airlines Logo
4:05 pm - 1:10 pmIAS-ORD
29h 05m2 stops
$757Multiple Airlines
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Thu, Jan 1 - Mon, Jan 19
Austrian Airlines Logo
4:20 pm - 3:20 pmORD-IAS
15h 00m1 stop
Austrian Airlines Logo
4:05 pm - 6:37 pmIAS-ORD
34h 32m2 stops
$867Austrian Airlines
Find Deal
Sat, Jan 3 - Sun, Jan 18

Lufthansa flights from Chicago O'Hare Intl Airport to Iaşi

Our best Lufthansa deals on Chicago O'Hare Intl Airport to Iaşi flight tickets
Lufthansa
Dec 31
ORD9:50 pmChicago O'Hare Intl
33h 30m
2 stops
IAS3:20 pmIasi
Jan 18
IAS4:05 pmIasi
29h 05m
2 stops
ORD1:10 pmChicago O'Hare Intl
$587
Find similar
Lufthansa
Dec 3
ORD10:35 pmChicago O'Hare Intl
32h 45m
2 stops
IAS3:20 pmIasi
Dec 7
IAS4:05 pmIasi
36h 00m
2 stops
ORD8:05 pmChicago O'Hare Intl
$593
Find similar
Lufthansa
Dec 30
ORD4:20 pmChicago O'Hare Intl
15h 00m
2 stops
IAS3:20 pmIasi
Jan 21
IAS4:05 pmIasi
29h 05m
2 stops
ORD1:10 pmChicago O'Hare Intl
$599
Find similar

Austrian Airlines flights from Chicago O'Hare Intl Airport to Iaşi

Our best Austrian Airlines deals on Chicago O'Hare Intl Airport to Iaşi flight tickets
Austrian Airlines
Dec 3
ORD4:20 pmChicago O'Hare Intl
15h 00m
1 stop
IAS3:20 pmIasi
Dec 7
IAS4:05 pmIasi
29h 55m
1 stop
ORD2:00 pmChicago O'Hare Intl
$651
Find similar
Austrian Airlines
Dec 3
ORD4:20 pmChicago O'Hare Intl
15h 00m
1 stop
IAS3:20 pmIasi
Dec 7
IAS4:05 pmIasi
29h 55m
1 stop
ORD2:00 pmChicago O'Hare Intl
$652
Find similar
Austrian Airlines
Dec 3
ORD1:05 pmChicago O'Hare Intl
18h 15m
2 stops
IAS3:20 pmIasi
Dec 7
IAS4:05 pmIasi
29h 55m
1 stop
ORD2:00 pmChicago O'Hare Intl
$656
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to Iaşi that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Iaşi that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Wed 12/31

9:50 pm-3:20 pm

2 stops33h 30m

Iasi

Sun 1/18

4:05 pm-1:10 pm

2 stops29h 05m

$587

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Wed 12/3

10:35 pm-3:20 pm

2 stops32h 45m

Iasi

Sun 12/7

4:05 pm-8:05 pm

2 stops36h 00m

$593

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Tue 12/30

4:20 pm-3:20 pm

2 stops15h 00m

Iasi

Wed 1/21

4:05 pm-1:10 pm

2 stops29h 05m

$599

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Thu 1/1

4:20 pm-3:20 pm

2 stops15h 00m

Iasi

Sun 1/18

4:05 pm-6:25 pm

2 stops34h 20m

$602

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Wed 12/3

4:20 pm-3:20 pm

1 stop15h 00m

Iasi

Sun 12/7

4:05 pm-2:00 pm

1 stop29h 55m

$651

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Wed 12/3

4:20 pm-3:20 pm

1 stop15h 00m

Iasi

Sun 12/7

4:05 pm-2:00 pm

1 stop29h 55m

$652

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Wed 12/3

1:05 pm-3:20 pm

2 stops18h 15m

Iasi

Sun 12/7

4:05 pm-2:00 pm

1 stop29h 55m

$656

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Wed 12/3

4:20 pm-3:20 pm

1 stop15h 00m

Iasi

Sun 12/7

4:05 pm-6:30 pm

2 stops34h 25m

$662

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Thu 1/1

1:24 pm-3:20 pm

2 stops17h 56m

Iasi

Mon 1/19

4:05 pm-1:10 pm

2 stops29h 05m

$757

ChicagoIaşi

ORD - IAS

ORDIAS

Chicago O'Hare Intl

Sat 1/3

4:20 pm-3:20 pm

1 stop15h 00m

Iasi

Sun 1/18

4:05 pm-6:37 pm

2 stops34h 32m

$867

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to Iaşi from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Iaşi

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Iaşi?

The cheapest day to depart on your flight to Iaşi is on a Monday when prices can be found for as low as $646. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Iaşi is Sunday, with ticket prices averaging around $1,038.

When to book flights from Chicago O'Hare Intl Airport to Iaşi

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to Iaşi according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to Iaşi (ORD to IAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Iaşi

Direct flights

None
There are no direct flights from Chicago O'Hare Intl Airport to Iaşi. There are no popular flight routes from Chicago O'Hare Intl Airport to Iaşi.
Search flight deals

  • How far is Chicago O'Hare Intl to Iasi by plane?

    The distance between Chicago O'Hare Intl and Iasi is about 5120.7 mi. Flights usually cover this in 15h 00m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Iasi Airport?

    Prices for flights from Chicago O'Hare Intl Airport to Iasi Airport are updated daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Iasi Airport?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Iasi Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Iasi Airport.

  • What documentation or ID do you need to fly to Iasi Airport?

    The travel and health documents you'll need for your trip to Iasi Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Iasi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Chicago O'Hare Intl Airport to Iaşi?

Best airlines flying from Chicago O'Hare Intl Airport to Iaşi

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Iaşi with momondo
Airline
Rating
Free Cancellation
Price
Austrian AirlinesPriceFrom $613Free CancellationRating
7.6
862 reviews
Search Austrian Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Iaşi?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Iaşi. momondo saves you time and could save you money on your trip.

Can I find flights from Chicago to Iaşi with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Chicago to Iaşi flights to just show those with flexible booking policies.

How can momondo help me find flights from Chicago to Iaşi?

momondo provides multiple filters to help you find the best flight to Iaşi from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Chicago to Iaşi right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Iaşi from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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